The most common and most likely answer to this crossword clue is the 9 letter word CANNONADE
C
A
N
N
O
N
A
D
E
Buddy explains!
The straight part
We know that "Pounding" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pounding = cannonade.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CANNONADE mean?
CANNONADE noun- Firing artillery in a large amount for a length of time .
- A loud noise like a cannonade; a booming.
- To discharge artillery fire upon.